While sperm counts appear to be dropping, there are several natural strategies that science has shown may significantly increase fertility in men. Here is the latest accumulation of research on nature’s ability to boost fertility.

New research has confirmed that lycopene, the carotenoid that makes tomatoes red, lowers the risk of hardening of the arteries. A 2011 study from researchers at the San Camillo de Lellis Hospital Cardiology Unit in Foggia, Italy, used ultrasonic testing and blood tests...